Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual é a taxa de ganho de capital de curto prazo com ganho de longo prazo em colecionáveis a 15%?
 ###Tabelas: CREATE TABLE list_of_protected_forests (list_of_protected_forests_id AUTO_INCREMENT PRIMARY KEY, Central Forest Reserve VARCHAR, Size in km² INT, Total plant species INT, Tree species INT, Endemic INT, Threatened (CR,VU,EN) INT) CREATE TABLE most_tries_in_a_match (most_tries_in_a_match_id AUTO_INCREMENT PRIMARY KEY, Player VARCHAR, Tries VARCHAR, Conv VARCHAR, Venue VARCHAR, Date VARCHAR) CREATE TABLE doubles_11_4-7 (doubles_11_4-7_id AUTO_INCREMENT PRIMARY KEY, Outcome VARCHAR, Date VARCHAR, Tournament VARCHAR, Surface VARCHAR, Partner VARCHAR, Opponents in the final VARCHAR, Score VARCHAR) CREATE TABLE regular_and_capital_gains_tax_rates_for_2009 (regular_and_capital_gains_tax_rates_for_2009_id AUTO_INCREMENT PRIMARY KEY, Ordinary income rate VARCHAR, Long-term capital gain rate VARCHAR, Short-term capital gain rate VARCHAR, Long-term gain on commercial buildings* VARCHAR, Long-term gain on collectibles VARCHAR) CREATE TABLE 2010_newcomers_race_'a'_practice_times_and_leaderboard (2010_newcomers_race_'a'_practice_times_and_leaderboard_id AUTO_INCREMENT PRIMARY KEY, Rank INT, Rider VARCHAR, Sat 21 Aug VARCHAR, Mon 23 Aug VARCHAR, Tues 24 Aug VARCHAR, Wed 25 Aug VARCHAR, Thurs 26 Aug VARCHAR, Fri 27 Aug VARCHAR, Sat 28 Aug VARCHAR)  
SELECT Short-term capital gain rate FROM regular_and_capital_gains_tax_rates_for_2009 WHERE Long-term gain on collectibles = 15%